Six-day modulation of the quiescent radio emission of SS 433

Трушкин, С. А.; Бурсов, Н. Н.; Smirnova, Yu. V.

doi:10.1134/1.1408981

Cited by 6 publications

(4 citation statements)

References 22 publications

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“…We detected three significant harmonics with the periods: 6.05, 6.1 and 6.59 days, which are probably connected with nutation and half-orbit periods. Thus we confirm the former detection for the shorter sets [17]. Obviously that even quiet fluxes are from the constant jets in SS433, probably are a summa of many discrete blobs (plasmons).…”

Section: Pos(muto2022)048 Pos(muto2022)048supporting

confidence: 87%

The history of long-term studies of Galactic X-ray binaries with jet emissions with RATAN-600

Trushkin¹,

Shevchenko²,

Bursov³

et al. 2022

Proceedings of the Multifaceted Universe: Theory and Observations - 2022 — PoS(MUTO2022)

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The first "Cold" survey of the CMB anisotropy has been carried out for almost 100 days in 1980 with the Northern Sector of RATAN-600, by the decision of Yu.N. Parijskij at the declination of the most famous Galactic object SS 433. Interestingly then this very variable sources was stable at cantimeter wavelengths. Since 1980 we conduct regular observations of the SS433 and later of new discovered Galactic stellar radio sources, collectively called microquasars. Indeed the radio emission and SS 433 and the first the Galactic 'superluminal' source GRS 1915+105 strongly resembles many well-known extragalactic sources associated with active galactic nuclei (AGNs). Already in the 1980s, VLA mapping of SS433 showed 'jet-like' morphology of its radio emission. Also from VLBI mapping it became clear that the famous flaring radio source Cyg X-3, which contains either a black hole (BH) or a neutron star (NS) in the binary with a massive Wolf-Rayet star, has an elongated radio emission shape at small angular scales, again similar to quasars. Now our long-term intensive studies of SS 433 allow us to assert that all the flaring events have been detected over the past ten years, and the bright flares themselves are unambiguously associated with the features of jet activity, well studied using optical spectroscopy of the object. In GRS 1915+105, we found a lot of relatively bright flaries associated with dramatic changes in the X-ray state, which was monitored in the ASM programs on the instruments of RXTE, SWIFT and MAXI. We studied on the properties of the giant Cyg X-3 flares detected on a long (weeks) and short (hours) time scale. For the last task see paper by Shevchenko et al. in this issue. Origin of the super-orbital 4.6-year period of the microquasar LSI+61d303 is probably associated with beats of the jets precession (26.95d) and the orbital (26.5d) motion of a pulsar. In general, the monitoring of microquasars with RATAN-600 is the highly productive program due to the features of the telescope and the sensitive multi-frequency measurements. Unknown properties of jets-disk coupling in X-ray binaries were detected, bringing clearance in common physics of cosmic relativistic jets.

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Section: Pos(muto2022)048 Pos(muto2022)048supporting

confidence: 87%

The history of long-term studies of Galactic X-ray binaries with jet emissions with RATAN-600

Trushkin¹,

Shevchenko²,

Bursov³

et al. 2022

Proceedings of the Multifaceted Universe: Theory and Observations - 2022 — PoS(MUTO2022)

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“…The available data allowed us to estimate the power at frequencies from ∼5 × 10 −9 Hz to ∼2 × 10 −6 Hz and at ∼10 −4 Hz. Before the binning of the power spectrum we have removed the peak of coherent variations with the nutational period (∼6 days, Trushkin et al 2001).…”

Section: Radio Observationsmentioning

confidence: 99%

Broad band variability of SS433: accretion disk at work?

Revnivtsev

Fabrika

Abolmasov³

et al. 2006

A&A

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We present broad band power spectra of variations of SS433 in radio, optical and X-ray spectral bands. We show that at frequencies lower than 10 −5 Hz the source demonstrates the same variability pattern in all these bands. The broad band power spectrum can be fitted by one power law down to frequencies ∼10 −7 Hz with flattening afterwards. Such a flattening means that on time scales longer than ∼10 7 s the source variability becomes uncorrelated. This naturally leads to the appearance of quasi-poissonian flares in the source light curve, which have been regularly observed in radio and optical spectral bands. The radio flux power spectrum appears to have a second break at Fourier frequencies ∼10 −5 Hz which can be caused by the smearing of the intrinsic radio variability on timescale of the light-crossing time of the radio emitting region. We find a correlation of the radio and optical fluxes of SS433 and the radio flux is delayed by about ∼2 days with respect to the optical one. Power spectra of optical and X-ray variabilities continue with the same power law from 10 −7 Hz up to ∼0.01−0.05 Hz. The broad band power spectrum of SS433 can be interpreted in terms of self-similar accretion rate modulations in the accretion disk proposed by Lyubarskii (1997, MNRAS, 292, 679) and elaborated by Churazov et al. (2001, MNRAS, 321, 759). We discuss a viscous time-scale in the accretion disk of SS433 with reference to the observed broad band power spectrum.

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“…Trushkin (1998) discussed in details the flaring events in Cyg X-3. Analysis of the light curves in X-ray and radio range (McCollough et al, 1998, Trushkin, 1999 confirmed the high correlation of the hard X-ray flux (20-100 keY) and flaring radio flux, and the anticorrelation with soft X-ray emission (2-12 keY) during powerful flaring activity (Sv > 3 Jy}.…”

Section: The Ratan-600 Radio Monitoring Of Rjxbmentioning

confidence: 67%

“…We found consistent patterns in spectral variability of RJXB. SOIne of the light curves of the RATAN monitoring of the RJXB are in Bursov & Trushkin (1995), Trushkin (1998), Trushkin & Bursov (1999) and Trushkin (1999). The dynamically resolved black hole GRO J1655-40 is a second (after GRS 1915+105) superluminal X-ray transient discovered by BATSE in July 1994, with 0.92c jets detected by VLBI and Light curves of 88433 at six frequencies in May-August the VLA.…”

Section: The Ratan-600 Radio Monitoring Of Rjxbmentioning

confidence: 99%

Radio Variability of the Galactic X-ray Binaries with Relativistic Jets

Трушкин

Бурсов

2002

Symp. - Int. Astron. Union

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Variable non-thermal radio emission from Galactic X-ray binaries is a trace of relativistic jets, created near accretion disks. The spectral characteristics of a lot of radio flares in the X-ray binaries with jets (RJXB) is discussed in this report. We carried out several long daily monitoring programs with the RATAN-600 radio telescope of the sources: SS433, Cyg X-3, LSI +61°303, GRS 1915+10 and some others.Many flaring RJXB show, exponential and power laws of flare decay. Moreover, these different laws could be present in one or several flares and commonly flare decays are faster at a higher frequency. The decay law seems to change because of geometric form of the conical hollow jets. The synchrotron and inverse Compton losses could explain general frequency dependences in flare evolution.

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Six-day modulation of the quiescent radio emission of SS 433

Cited by 6 publications

References 22 publications

The history of long-term studies of Galactic X-ray binaries with jet emissions with RATAN-600

The history of long-term studies of Galactic X-ray binaries with jet emissions with RATAN-600

Broad band variability of SS433: accretion disk at work?

Radio Variability of the Galactic X-ray Binaries with Relativistic Jets

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